Graphiting machine



Sept. 6, 1932. o. J. HEATH GRAPHITING MACHINE 4 Sheets-Sheet 1 Filed Feb. 9. 1931 OZZ'Var f/ ea Z Z ATTORNEYS Sept. 6, 1932. o. .1. HEATH GRAPHITING MACHINE '4 Sheets-Sheet Filed Feb. 9, 1951 022729) J/Zdli ATTORQEYS Sept. 6, 1932. 0.. J. HEATH GRAPHITING MACHINE Filed Feb. 9. 1931 4 Sheets-Sheet INVENTOR 02g Var 1f 2 g4 62 ATTORNEYS Sept. 6 1932. o. J. HEATH GRAPHITTNG MACHINE Filed Feb. 9, 1951 4 Sheets-Sheet ATTORNEY/S V. oL'IvEn J. HEATH; or TOLEDQjOI-IIO, nssrenon TO THE Patented Sept. 6, 1932 COMPANY, or 'ronnpo, 0310, A CORPORATION. or OHIO GRAPHITI'NG 'MAon'InE j Application filedlebruar y 9,1931, Serial No. 514,656,

' This, invention relates generally to machines for feeding graphite into bushings" and consists of certain novel features of con,- struction, combinations and arrangements of parts that will be hereinafter more fully cle-,

scribed and particularly-pointed"out in the appendedclaims. r P

In the accompanying drawings:

1 Figure l is a side elevation of a machine embodying my" invention and I showing the graphite feeding piston in its uppermost position after the graphite cylinder has been emptied; 7 v

Figure 1A is a view similar to Figure 1 but showing a graphite feeding'pistonin:lowermost position after the graphite cylinder has been filled with graphite;

Figure 2 isarear elevation of the machine.

and showing a portion of the bushing on the arbor broken away; 1

Figure 3 is a detail view 'of the arbor; r v Figure 4 is aisectional view through the arbor cap vFigure 5 is a sectional view through the lower plug for the uppermost'air cylinder 5 Figure 6 is a' sectional view through the,

upper plug for the uppermost air cylinder Figure 7 is a sectional view'through the graphite cylinder; 1 v, I

Figure 8 is a sectional view through the lowermost air cylinder uppermostair cylinder ;v V

, Figure lO'is a sectional View double acting valve;

Referring now to the drawings, A is a supporting frame and B and C respectively are vertically spaced brackets projecting laterally from the frame at the upper'end there of. Preferably the frameA comprises two sections 1 and 2 respectively that are bolted through the to ether. As shown, thelowersection 1' is substantially rectangular in form and has a flat base 3 that is adapted to-be bolted to a suitable flooring or other support. The upper section 2 has a substantially horizontal por{ tion 4 resting on the upper end of the lower section 1 and has a substantially vertical per tion 5 rising from the horizontal portion 4 and provided adjacent its upper end with F gure. 9 is a sectional. view through 1, tlie BUNT INfG BRASS & .BBO NZE 1 laterally spaced elongated-slots 6. Thebrac kets B and C have'substantially flat attaching portions .7 and 8 respectively bolted to the vertical portion 5 of the frameand have vertically aligned'tubular portions9 and 10.

respectively. Preferably the bolts 11 used 7 to secure the upper bracket G to the frame are receivedin: the elongated slot 6 so that the bracket C is adjustable'vertically relative to the 'fixedlower'br acket B. 12 is 'arcylinder for graphitesupported in the bracket-B and provided adjacent its upper endwitlian' inlet 13 for graphite. 14 isa bushingarbor having a reduced portion 15 threaded in the upper end of thegraphitecylinder 12 and having axial, transverse and annular grooves 16,17 and 18 respectlvely adapted'to receive graphite in the order named from the cylinder'12, and l9is an air cylinder threaded onto the lowerend ofthe graphite cylinder 12.

Preferably the cylinder 12 for graphite fits snugly in the tubular portion 9 of the lower-v bracket B and is provided at its upper end with a lateral flange 20 that'rests upon the upper end of said tubular portion. The arbor 1 4 is provided at its lowerend just above the reduced portion 15 with an annular flange 21 that constitutes a seat for the'work such as a bushing 22, and the air'cylinder 19 is inverted cup-shape in form andis closed at its lower end by a plate 24 provided axially with a suitable air inlet 25. 'D' andE respectively are reciprocating pistons within the cylinders 19and 12, and26 is a=rod movableaxially of the cylinders and terminally connectedto the pistons sothat they: will operate in unison. Preferably the piston D comprises a" leather cup 27 reinforced by suitable metal plates or discs 28 and 29, while the piston E comprises a leather cup 30 reinforced by metal discs 31 and 32 respectively. As shown, these pistons are: sleeved upon opposite ends of the rod 26- against shoulders thereof andare held thereon by nuts 33 and .34 respectively; 35 .is a

valve of the single acting type for controlling the supply of air through suitable tubing 36 I to the air inlet 25 in the cylinder 19, and 37 is a pedal, for-operating said valve. As shown, this valve is conventional indesign and includes arocker 38 that is connected to D the pedal 37 by a long link 39. Preferably a coil spring is terminally secured to the link 89 and to the section 1 of the frame and is adapted to return the rocker 38 and link 39 to normal position after they have been actuated by the pedal, as will be-hereinafter more fully described. 41 is an air cylinder supported in the upper bracket O in substantially vertical alignment with the graphite cylinder 12'; 42 isa plug threaded in the upper endofsaid air cylinder and having an axial airinlet 43, and 44 is a plug threaded in the lower end of said air cylinder and having a substantially L-shaped air inlet 45. Preferably the cylinder 41 fits snugly in the tubular portion 10 of the bracket Candis provided at its lower'endI witha lateral flange 48 that engages the lower end of the tubular portion 10. A nut49 is threaded onithe cylinder 41 intermediate its ends and engages the upper end of the tubu- Par portion 10. Thus between the flange 48 and nut 49 a cylinder 41 is securely held in place in the bracket C. F is a reciprocating piston within: the cylinder- 41.; 50' is a rod secured: to the piston and movable axially of the cylinder andlplug44g; 52is a nutthreaded inn the plug" 44 and constituting therod: 50, and 58 is a cap threaded onto the lower end of the rod 50 and adapted to clamp a bushing such graphiteisbeingfed thereto from the cylinder-12r 1 Preferably the piston F comprises two leather cups 5.4 and 55 separated by a metalspacer: 56 and. reinforced by metal discs 57 and 58-. respectively and? is secured. by a nut 59 against a; shoulder of tliBOdi 502' 'lihecapi 5'3: isvinverted? cup-shape in formiand has: a vent 6Oi=in one=' si d'e thereof to. permit the escape-ofiazir whenthe graphite is iiorce'd into the bushing 22 from the annularpassage 128E in'tlie'arborzi i 61 is'a valireof'tlie dioubl e actand includes a rocker that is connected to the pedal 64by means of a long" link 66. A; coil spring 67 is terminally secured to" said link 6'6and' to the lower section" 1 ofthe frame and is adapted to return the rocker 65 and: link: 66 to normal position after the pedal 64 has been released,"

Inuse anysuitablemeans such asa graphite gun (not shown) may be applied to the inlet 18-;to'supply graphite'to the-cylinder 12. Assuming the parts to be in the position illustrated in Figure" 1, the graphite supplied to the cylinder 12' through the inlet will press down upon the piston E and. will cause said piston and the rod 26 and piston'D to be loweredto the positionillustrated in Figure 1A. After a bushing such as 22 is placed upon the arbor 1 4'the pedal 64 may be pressed downwardly so that air will be admitted y a guide foras 22 upon the arbor '14 while" 1ngtype for controlling the-supply of air througlnsuitablef tubing-.262? and: .63; respecs for operating the valve 61. As

wardly. Thiswill cause graphite to flow 12 through the axial, trans from the cylinder verse and annular passages 16, 17 and 18 respectively to the grooves 7 O in the bushing 22. Upon release of the pedal 37 the spring 40will return the valve rocker 35 to exhaust position thereby relieving air pressure on the piston D. Inthis connection it will be noted that the action of the spring 40 androcker 35 does not cause'thepistons D and E to belowered but permits them to remain in the position they just assumed. The pedal 64 may then be released whereupon the spring 67 causes the rocker 65 of the valve 61'to movein the opposite direction so that will be admitted to the inlet 45 and will cause the piston F, rod 50 and cap 53- to be raised.

Thus from the foregoing it will be apparent" that repeated operation of the pedal 37'causes advancement upwardly of the a step by step pistons D and E until the cylinder 12 is emptied,

must then and Eto be lowered to the position-illustrated in Figure 1A, whereupon the successive step by step advancement upwardly may again take place by successive operations of the pedal 37. On the other hand, movement ofthe rocker 65 of the valve 61 in opposited'irections causes air to be successively su pplied to opposite ends of the cylinder 41 so that the cap 53 is positively lowered and raised.

What I claim as my invention is:

1. In a graphite machine, a cylinder for' 2. In a graphite machine, a pair of substantially aligned brackets, a bushing arbor carriedby on-eof said brackets, a cap for the carried by the other of arbor, and means said brackets for actuating said cap.

3. In a graphite machine, a pair of verti cally spaced brackets having substantially aligned tubular portions, va cylinder. for:

graphite in one of said tubular portions, abushing arbor associated with said cylinder and adapted to receive graphite therefrom, an

air cylinder in the other piston in the air cylinder, arbor movable by said piston.

tubular portion. a

4. In a graphite machine, a frame, a pair" as illustrated in Figure 1. Graphite be supplied through the inlet 13 through the eylinder12 to cause the pistons D and a cap for-the;

of brackets projecting laterally from the frame, one of said brackets being adjustable on the frame, a bushing arbor carried by the other of said brackets, and a cap for the arbor carried by the adjustable bracket and movable relative thereto to and from the arbor.

5. Ina graphite machine, a stationary arbor upon which a bushing is adapted to be sleeved and having means for conducting graphite to the interior of the bushing, and means for holding the bushing sleeved upon the arbor including a member mounted for longitudinal movement in substantial alignment with said arbor.

6. In a graphite machine, a stationary arbor of substantially cylindrical configuration upon which a bushing is adapted to be sleeved, and means for holding the bushing .sleeved upon the arbor including a member mounted for longitudinal movement at one end of the arbor.

7. In a graphite machine, a stationary arbor upon which a bushing is adapted to be sleeved and having a passage for conducting graphite to the interior of the bushing, means for holding the bushing sleeved upon the arbor, including a member mounted for longitudinal movement adjacent the arbor, and means for supplying graphite to the passage aforesaid in the arbor including a member mounted for longitudinal movement in substantial alignment with said arbor.

8. In a graphite machine, a frame, a bracket carried by the frame, a cylinder for graphite carried by the bracket, an arbor for a bushing mounted on and having a passage for graphite in communication with said cylinder, a cylinder for compressed air suspended from the cylinder aforesaid, pistons operable within said cylinders, and a driving connection between said pistons.

9. In a graphite machine, a 7 frame, a

bracket carried by the frame, a cylinder for graphite carried by the bracket, an arbor for a bushing adjacent and having a passage for graphite in communication with said cyl inder,a cylinder for compressed air adjacent the cylinder aforesaid, pistons operable within said cylinders, and a driving connection between said pistons.

10. In a graphite machine, an arbor upon which a bushing to be be sleeved and having a passage for conduct ing graphite to a bushing while sleeved thereon, said arbor being provided at one end with a seat for an end of the bushing, means enveloping the other end of the arbor and clamping the end aforesaid of the bushing against said seat, and means for forcing graphite through the passage while the bushing is clamped.

11. In a graphite machine, an arbor upon which a bushing is adapted to be sleeved, and means for holding a bushing sleeved upon graphited is adapted to said arbor including means for partially enveloping the arbor.

12. In a graphite machine, an arbor upon said arbor, and means operable while said bushing is held on the arbor for feeding graphite to the arbor, including a member mounted for longitudinal movement in substantial alignment with the arbor.

14. In a graphite machine, a stationary arbor upon which a bushing is adapted to be sleeved, including a rigid cylindrical member having a peripheral seat for an end of a bushing and having communicating axial and transverse passages for graphite.

In testimony whereof I affix my signature OLIVER J. HEATH. 

